It’s madaras rinnegan tech, like ameno is sasukes, nagato doesn’t have a rinne exclusive tech because he didn’t awaken the rinnegan, it was transplanted. What happens when you transplant an eye? When has it been shown to gain new jutsus? When has it ever been shown? EVER, with ANY transplanted jutsu? . I don’t have to prove anything to you, as everything has already been shown to you, you just don’t wanna see it because your obsessed with thinking you classify as anything close to a debater. You want proof? Your literally clinging on to a solitary statement made by someone who actually did what your saying they can’t. This is my last response to you, as your literally a waste of time. If you wanna be one of the literally 3 people on this site that believe nagato is the sole user of the the rinnegans 6 paths, jutsu, so be it.
